Decide on structure of eventing models

[destos]

whether or not to use an external module to add eventing and schedule support to use those modules as the basis for designing our own.

Some of the event model needs are described in a high level on:
https://github.com/tulsawebdevs/tulsawebdevs.org/blob/master/IA.md
https://github.com/tulsawebdevs/tasks/wiki/Meeting-IA
https://github.com/tulsawebdevs/tasks/wiki/Jobs
https://github.com/tulsawebdevs/tasks/wiki/TWD-Information-Architecture